Crypto Derivatives: Analytics Report – Week 30

Weekly recap of the crypto derivatives markets by BlockScholes.
Key Insights:
Sentiment in crypto markets is showing signs of rebounding, demonstrated by both an increase in our Block Scholes Risk Appetite indices, and in options market positioning. Short-dated put-call skew has slowly recovered through the month of July for both BTC and ETH from around -10% at the start of the month to trade at neutral levels. That rebound in sentiment away from the bearish put-premium that has mostly dominated the first half of this year has occurred alongside a recovery in spot price – with BTC now trading above $66K.
At-the-money implied volatility levels also trade close to year-to-date lows, despite ongoing conflict in the Middle East. The US launched its tenth consecutive round of strikes on Iran, though short-dated BTC IV continues to trade slightly above 30%.
Block Scholes BTC Risk Appetite Index
Block Scholes ETH Risk Appetite Index
1-Month Tenor ATM Implied Volatility
BTC Options
BTC SVI ATM IMPLIED VOLATILITY – Despite the 10 consecutive night of strikes from the US on Iran, implied volatility levels have traded sideways around 30% since early-July.
ETH Options
ETH SVI ATM IMPLIED VOLATILITY – At-the-money implied volatility for short- dated ETH options has traded close to its year-to-date lows of 40% over the past week.
BTC and ETH Skew
BTC 25-Delta Risk Reversal – As BTC trades above $66K, sentiment over the near term in options markets is now at neutral levels. 7-day 25-delta put-call skew has increased from -11% at the start of the month to 0%.
ETH 25-Delta Risk Reversal – Similar to BTC, short-dated skew in ETH options is now also at neutral levels. That coincides with a recovery in ETH’s spot price above $1,900 – a level last seen in early June.
Market Composite Volatility Surface
BTC SVI – 8:00 UTC Snapshot.
ETH SVI – 8:00 UTC Snapshot.
Cross-Exchange Volatility Smiles
BTC SVI, 30D TENOR – 8:00 UTC Snapshot.
ETH SVI, 30D TENOR – 8:00 UTC Snapshot.
Constant Maturity Volatility Smiles
BTC SVI, 30D TENOR – 8:00 UTC Snapshot.
ETH SVI, 30D TENOR – 8:00 UTC Snapshot.
Data Reference
Block Scholes Risk Appetite (BTC/ETH)
Block Scholes’ Risk Appetite index uses a composite spot index price; POST /api/v1/price/index
1-month ATM implied volatility (BTC/ETH)
At-the-money IV at a constant 1-month tenor; forward- looking vol expectations; POST /api/v1/iv/moneyness
Volatility term structure & SVI ATM IV by tenor (BTC/ETH)
SVI-fitted ATM IV across constant tenors (7d / 14d / 30d / 90d / 180d); POST /api/v1/modelparams
25-delta risk reversal / skew (BTC/ETH)
Spread between 25Δ call and 25Δ put IV; a measure of upside vs downside option demand; POST /api/v1/iv/risk-reversal
Market composite volatility surface (BTC/ETH)
BlockScholes composite SVI surface across forward moneyness and tenor, aggregating market-wide options pricing into one clean fitted surface; POST /api/v1/iv/moneyness + POST /api/v1/modelparams
Cross-exchange volatility smiles (BTC/ETH)
Venue-level (Deribit, Bybit) and composite smiles at a fixed tenor, for comparing exchange pricing against the market composite; POST /api/v1/iv/moneyness
Constant-maturity volatility smiles (BTC/ETH)
Like-for-like smile at a fixed tenor across strikes, showing how the smile shifted between dates; POST /api/v1/iv/strike
Thanks to Andrew Melville and Thahbib Rahman, Block Scholes



